فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri - Paris Observatory

The simplest molecule formed by the → cyano radical.
The CN molecule is of considerable astrophysical importance, since many of its transition
lines/bands are observed in various astronomical objects:
interstellar medium, comets, various stars such as
late-type F and G-dwarfs, and late-type giants. CN was the second interstellar
molecule, after → CH (methylidine),
to be identified; toward the bright star
→ Zeta Ophiuchi at ultraviolet wavelengths
(A. McKellar, 1940 ASP Conf. Ser. 52, 187).
CN was also one of the earliest molecules
to be detected in other galaxies (Henkel et al. 1988, A&A 201L, 23).